Datasheet BM20, BM23 (Microchip) - 2

BM20/23
• Integrated 3V and 1.8V Configurable Switching Regulator and LDO • Built-in Lithium-ion Battery Charger (up to 350 mA) • Built-in ADC for Battery Monitor and Voltage Sense • Audio-In/Out – BM23 supports digital audio I2S format – BM20 supports analog audio output • Transparent Universal Asynchronous Receiver/Transmitter (UART) Mode for Seamless Serial Data Over UART Interface • Integrated Crystal Oscillator and Matching Circuitry • Secure AES128 Encryption
RF/Analog
• Frequency Spectrum: 2.402 GHz to 2.480 GHz • Receive Sensitivity: -91 dB (π/4 DQPSK) • Transmitter Output Power: +4 dBm (maximum) for Class 2
Audio processor
• Support 64 Kbps A-Law, μ-Law PCM format/Continuous Variable Slope Delta Modulation (CVSD) for SCO Channel Operation • Noise Reduction (NR) and Acoustic Echo Cancellation (ACE) • Sub-Band Coding (SBC) and Optional Advanced Audio Coding (AAC) Decoding • Packet Loss Concealment (PLC) • Four Languages (Chinese/ English/ Spanish/ French) Voice Prompts Support (20 events for each language) using the IS20XXS_UI tool • Serial Copy Management System (SCMS-T) Content Protection
Audio Codec
• 20-Bit Digital-to-Analog Converter (DAC) and 16-bit Analog-to-Digital Converter (ADC) Codec • 98 dB Signal-to-Noise ratio (SNR) DAC Playback
Peripherals
• One Line-in Port for External Audio Input • Two LED Drivers • One UART Interface • Multiple I/O Pins for Control and Status • High-Speed HCI-UART Interface (supports up to 921,600 bps)
Antenna
• PCB Antenna
Compliance
• Bluetooth Special Interest Group (SIG) Certified: – BM20 QDID: 121137 – BM23 QDID: 121137 © 2019 Microchip Technology Inc.
Datasheet
DS70005406B-page 2 Document Outline Introduction Features RF/Analog Audio processor Audio Codec Peripherals Antenna Compliance Operating Conditions Applications Table of Contents 1. Device Overview 1.1. Interface Description 2. Application Information 2.1. Operation with External MCU 2.2. I2S Mode Application 2.3. RESET (RST_N) 2.4. Status LED (LED1, LED2) 2.5. External Configuration 3. Electrical Characteristics 4. Printed Antenna Information 4.1. Module Radiation Pattern 4.2. Module Placement Rules 5. Reference Circuit 5.1. BM20 Reference Circuit 5.2. BM23 Reference circuit 6. Physical Dimensions 7. Reflow Profile 7.1. Soldering Recommendations 7.2. Packing and Storage Information 8. Ordering Information 9. Certification Notices 9.1. United States 9.1.1. Labeling and User Information Requirements 9.1.2. RF Exposure 9.1.3. Helpful Websites 9.2. Canada 9.2.1. Labeling and User Information Requirements 9.2.2. RF Exposure 9.2.3. Helpful Websites 9.3. Europe 9.3.1. Labeling and User Information Requirements 9.3.2. Conformity Assessment 9.3.3. Simplified EU Declaration of Conformity 9.3.4. Helpful Websites 9.4. Japan 9.4.1. Labeling and User Information Requirements 9.4.2. Helpful Websites 9.5. Korea 9.5.1. Labeling and User Information Requirements 9.5.2. Helpful Websites 9.6. Taiwan 9.6.1. Labeling and User information Requirements 9.6.2. Helpful Websites 9.7. China 9.7.1. Labeling and User Information Requirements 9.8. Brazil 9.9. Mexico 9.9.1. Labeling and User Information Requirements 9.10. Argentina 9.10.1. Labeling and User Information Requirements 9.11. Other Regulatory Jurisdictions 10. Document Revision History The Microchip Website Product Change Notification Service Customer Support Microchip Devices Code Protection Feature Legal Notice Trademarks Quality Management System Worldwide Sales and Service